EDI DIAGNOSIS
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 5E-37
TEST DESCRIPTION
Verify continuity between the following:
ECM 68 PIN CONNECTOR
7 TERMINAL CONNECTOR
29 1
52 2
7 3
33 5
Verify the actuators resistance between terminals 1 and 2 of the injection pump connector:
RESISTANCE (Ohm)
MINIMUM / MAXIMUM MEASUREMENT
11.3 ± 0.3
Verify supply voltage to injection pump with the 7 terminal connector unplugged and key ON.
Measure between terminals 3 and 5 of the harness side connector:
CURRENT (VOLTS) MINIMUM / MAXIMUM MEASUREMENT
5 ± 0.0
DIAGNOSTIC HELP:
Verify the following:
• Open or short in the CKT Pin 5, CKT Pin 7 or CKT Pin 52.
• Improper terminals or pins at the 7 terminal connector or ECM.
• Defective fuel injection pump.
• Defective ECM.
Failure of the Fuel Quantity Sensor influences engine performance as follows:
• If the Fuel Quantity Sensor fails with the engine operating, the engine immediately
shuts off. If it failed at start up, the engine does not start. In both cases the MIL is
illuminated.
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